/Engine/Source/Runtime/CoreUObject/Public/UObject/UnrealType.h
Legacy version taking the flags as 3 separate values
TFieldIterator ( const [UStruct](API\Runtime\CoreUObject\UObject\UStruct) * InStruct, [EFieldIteratorFlags::SuperClassFlags](API\Runtime\CoreUObject\UObject\EFieldIteratorFlags__SuperClassF-) InSuperClassFlags, [EFieldIteratorFlags::DeprecatedPropertyFlags](API\Runtime\CoreUObject\UObject\EFieldIteratorFlags__DeprecatedP-) InDeprecatedFieldFlags, [EFieldIteratorFlags::InterfaceClassFlags](API\Runtime\CoreUObject\UObject\EFieldIteratorFlags__InterfaceCl-) InInterfaceFieldFlags )